EASY
Stage 1 & 2
IMPORTANT
Earn 100

Calcium hydroxide reacts slowly with the carbon dioxide in the air to form a thin layer of 

50% studentsanswered this correctly

Important Questions on Chemical Reactions and Equations

MEDIUM
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 3 - Chemical Reactions and Equations>Target Exercise>Q 10
Lead nitrate on thermal decomposition gives lead oxide, _______ and _______.
EASY
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 3 - Chemical Reactions and Equations>Target Exercise>Q 11
Food containing fats and oil usually contain ______ to prevent oxidation.
EASY
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 3 - Chemical Reactions and Equations>Target Exercise>Q 12
Which of the following is not a chemical change?
MEDIUM
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 3 - Chemical Reactions and Equations>Target Exercise>Q 13
Which of the following is a reversible reaction?
MEDIUM
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 3 - Chemical Reactions and Equations>Target Exercise>Q 14
Calcium oxide is commonly named as
MEDIUM
Stage 1 & 2
IMPORTANT
Target NTSE Class 10 Stage 1 & 2 Solved Papers (2015 – 19)>Chapter 3 - Chemical Reactions and Equations>Target Exercise>Q 15
Silver chloride turns grey in sunlight because of its decomposition into